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Purification mixing column for measuring perchlorates in water and preparation method

A perchlorate and mixed column technology, applied in chemical instruments and methods, water pollutants, measuring devices, etc., can solve problems such as difficulty, complicated detection operation, and impact, so as to save detection cost and simplify analysis operation steps , the effect of reducing labor intensity

Pending Publication Date: 2020-12-11
四川佳士特环境检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of purification mixing column and preparation method that are used for the determination of perchlorate in water, to solve the problem of carbonate, heavy carbon in the water sample when detecting the content of perchlorate in the water sample in the prior art. Salt, sulfate, chloride and the impact on detection, as well as the complex and difficult problem of detection operation; many technical effects that can be produced by the preferred technical solutions among the many technical solutions provided by the present invention are detailed below.

Method used

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  • Purification mixing column for measuring perchlorates in water and preparation method
  • Purification mixing column for measuring perchlorates in water and preparation method
  • Purification mixing column for measuring perchlorates in water and preparation method

Examples

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Embodiment 1

[0063] A purification mixed column for the determination of perchlorate in water, the purification mixed column comprises a column body 1, characterized in that: the column body 1 is filled with Ba in sequence in the flow direction a of the mobile phase 2+ - Cationic resin 2, Ag + - Cationic resin 3, H + - cationic resin 4; the column joint 5 is installed at the end of the mobile phase liquid inlet end of the column body 1, and the filter sheet 7 is provided at the end of the liquid outlet end of the column body 1; the purification mixing column is in the structure The design of the mixing and purification mixing column is used, which simplifies the analysis operation steps and reduces the labor intensity of the operators.

[0064] As an optional implementation, the Ba 2+ - Cationic resin 2, Ag + - Cationic resin 3, H + - The filling heights of the cationic resin 4 are 180mm-220mm, 180mm-220mm, and 180mm-220mm respectively.

[0065] In this example, the Ba 2+ - Cationic ...

Embodiment 2

[0069] The purification mixed column that is used for the determination of perchlorate in water in the preparation embodiment 1 comprises the following steps:

[0070] (1) Ba 2+ - Preparation of Cationic Resin 2

[0071] The Ba 2+ -The preparation of cationic resin 2 comprises the following steps:

[0072] ① Prepare reagents: high-purity water (conductivity: 18.25MΩ), 1.0mol / L barium chloride solution, silver nitrate solution with a concentration of 1% by weight (weigh 34 grams of silver nitrate and dissolve it in 200mL of high-purity water, shake well) and Ethanol with a purity ≥99.0%;

[0073] ②Wash the 90-mesh cationic resin with the high-purity water prepared in step ①, and then wash it twice with the ethanol prepared in step ①, then vacuum-dry the cationic resin at 90°C for 5 hours, and then take it out of the oven to cool;

[0074] ③ Weigh 30 grams of the cooled cationic resin in step ②, put it into a dry beaker, add 200 mL of step ① to prepare the barium chloride so...

Embodiment 3

[0097] In this example, the purification mixing column used for the determination of perchlorate in water in Preparation Example 1, in the preparation of Ba 2+ -In the process of cationic resin 2, differ from Example 2, comprise the following steps:

[0098] (1) Ba 2+ - Preparation of Cationic Resin 2

[0099] The Ba 2+ -The preparation of cationic resin 2 comprises the following steps:

[0100] ① Prepare reagents: high-purity water (conductivity: 18.25MΩ), 1.2mol / L barium chloride solution, silver nitrate solution with a concentration of 1.2% by weight (weigh 40.8 grams of silver nitrate and dissolve it in 200mL of high-purity water, shake well) and Ethanol with a purity ≥99.0%;

[0101] ②Wash 100 meshes with the high-purity water prepared in step ①, and then wash twice with the ethanol prepared in step ①, then vacuum-dry the cationic resin at 95°C for 5.5 hours, and then take it out of the oven to cool;

[0102] ③ Weigh 30 grams of the cooled cationic resin in step ②, put...

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Abstract

The invention provides a purification mixing column for detecting perchlorates in water (surface water, underground water, wastewater and domestic drinking water) and a preparation method of the column, and solves the problem of influence of carbonates, bicarbonates, sulfates, chlorides and metal ions in a water sample on perchlorate detection in the prior art. The purification mixing column comprises a column body, and the column body is filled with Ba<2+>-cation resin, Ag<+>-cation resin and H<+>-cation resin in sequence in the flowing direction of a mobile phase; and universal column connectors of ion chromatography columns are installed at the two ends of the column body and suitable for joint ends of all ion chromatography columns, and filtering pieces are arranged at the ends of an inlet end and an outlet end of the column body. The purification mixing column can remove sulfate ions, chloride ions, metal ions and other impurities in a water sample to avoid the influence of the impurities on the test result of detecting perchlorates in the water sample, thereby accurately measuring the content of perchlorates in the mobile phase. Meanwhile, the anion separation column, an ionsuppressor and a conductivity detector are well protected, and long-period operation of the instrument is ensured.

Description

technical field [0001] The invention relates to a purification mixing column, in particular to a purification mixing column for measuring perchlorate in water and a preparation method thereof. Background technique [0002] Perchlorate is a common, potentially harmful pollutant that disrupts thyroid function, both natural and synthetic. Naturally occurring perchlorates are often used as raw materials for fertilizers, while synthetic ones are widely used in leather processing, rubber manufacturing, paint production, lubricant additives, etc., and are the main components of solid rocket propellants. The use and unreasonable treatment of strong water-soluble perchlorate will cause it to migrate to groundwater and surface water, polluting soil, drinking water and irrigation water. Currently, high levels of perchlorate in drinking water have been detected in twenty-two US states; this water is also used for crop irrigation. As a result, food safety concerns such as perchlorate c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42G01N30/96G01N30/06C02F101/12
CPCC02F1/42G01N30/96G01N30/06C02F2001/425C02F2101/12
Inventor 沈治荣朱游升杨利王梦婷
Owner 四川佳士特环境检测有限公司